Under mass law, how far away do you have to stay from swimmers?

The guideline to stay at least 150 feet away from swimmers is rooted in safety concerns regarding vessel operation in proximity to individuals in the water. This distance helps to minimize the risk of accidents that can occur due to waves generated by a boat's wake, as well as the potential for injury from propellers or other moving parts of a vessel.

Staying 150 feet away allows enough space for boat operators to navigate safely while ensuring that swimmers are not disturbed or put in harm's way. This precaution is particularly important in busy areas where swimmers congregate, as it also provides a buffer zone to account for unpredictable movements of both the vessel and the individuals in the water.

The other distances listed, while they may reflect safe practices under different circumstances, do not align with the established guideline of 150 feet which is deemed appropriate for balancing safety and accessibility for swimmers.